In: Physics
Assume a planet with mass M and radius R.
(a) Find the strength of its gravitational field at the surface, g. [5]
(b) Find the escape velocity, vesc, for a mass on the planet's surface in terms of M and R. [10]
(c) Show that vesc=√2gR . [3]
(d) Calculate the numeric value of the escape velocity from Earth without using Earth's mass. [2]
(a) for a planet of mass M and radius R ,the strength of gravitational field g =
(b) the escape velocity of an object from the planet surface is √(2GM/R)
(c) escape velocity in term of g and R is √2gR
(d) the escape velocity of earth is 11.2 km/s